It is well-known sport in which individual athletics challenges each other to decide the single victory. Participants usually have to race around an oval running track around the grass field. Running events are won by the athletics with the fastest time achieved in the greatest distance in the contest. This sport has various forms such as race walking, road running, cross country running etc. There are 2 most prestigious international competitions that are held for the running competition i.e. Olympic Games and IAAF World Championship.